A:
Positive:
1 x 300074397 x 428677711 x 272794977 x 38970779 x 379841553 x 54263869 x 345314933 x 6083
Negative:
-1 x -30007439-7 x -4286777-11 x -2727949-77 x -389707-79 x -379841-553 x -54263-869 x -34531-4933 x -6083
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 30,007,439, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 30,007,439 | |
| -1 | -30,007,439 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,007,439.
Example:
1 x 30,007,439 = 30,007,439
and
-1 x -30,007,439 = 30,007,439
Notice both answers equal 30,007,439
With that explanation out of the way, let's continue. Next, we take the number 30,007,439 and divide it by 2:
30,007,439 ÷ 2 = 15,003,719.5
If the quotient is a whole number, then 2 and 15,003,719.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 30,007,439 | |
| -1 | -30,007,439 |
Now, we try dividing 30,007,439 by 3:
30,007,439 ÷ 3 = 10,002,479.6667
If the quotient is a whole number, then 3 and 10,002,479.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 30,007,439 | |
| -1 | -30,007,439 |
Let's try dividing by 4:
30,007,439 ÷ 4 = 7,501,859.75
If the quotient is a whole number, then 4 and 7,501,859.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 30,007,439 | |
| -1 | 30,007,439 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 79 | 553 | 869 | 4,933 | 6,083 | 34,531 | 54,263 | 379,841 | 389,707 | 2,727,949 | 4,286,777 | 30,007,439 |
| -1 | -7 | -11 | -77 | -79 | -553 | -869 | -4,933 | -6,083 | -34,531 | -54,263 | -379,841 | -389,707 | -2,727,949 | -4,286,777 | -30,007,439 |
Here are some more numbers to try:
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